That sounds precisely like what's happening. Had it happen a few other times mildly, all dives of which were long, deep bottom time hunts. I'll have to research the stretches/exhale dives and see if that helps. Want to do deeper hunting but must get this figured out first...
I dive up and down the west coast of FL, but frequent my home town of Bradenton at least mnthly. Been going out of Homosassa for the last yr.... lots of fish

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Have you resolved this issue personally or is this a limiting factor to max hunting depth?
Thanks for the welcome, Noah